What shops here make and for whom
Dongguan shops are often vertically arranged: a mold maker builds the tool, a molding shop runs it, and an assembly shop finishes and packs. Customers include phone and device makers in the same city, Shenzhen electronics firms, appliance brands and overseas buyers placing OEM or ODM orders.
Because of this, tooling projects often set the delivery schedule of the whole program, and a late mold change ripples through assembly and shipping.
Quoting and estimating realities
Mold quotes are driven by part geometry, steel grade, cavity count, hot or cold runner, surface finish and expected tool life. Production part quotes add resin price, cycle time, machine tonnage, scrap and secondary operations. Resin and metal prices move, so quotes need a stated validity period and often a material price adjustment clause.
Estimators who reuse past jobs as a basis save time, but only if past actuals (real cycle times, real scrap, real tool hours) are captured and findable rather than buried in spreadsheets.
- Separate tooling cost from piece price and from sample cost
- Record actual mold hours by operation (milling, EDM, polishing, trial)
- Capture trial and ECN history per mold
- State resin and plating assumptions explicitly
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Injection Mold Maintenance Checklist
A practical preventive maintenance checklist for injection molds, from daily checks at the press to full overhaul and storage.
ERP and systems commonly seen
Smaller Dongguan shops commonly run Kingdee or Yonyou accounting with spreadsheets for scheduling, while larger or foreign-invested firms run SAP, Oracle or an industry-specific mold or MES package. Mold shops in particular need project-style tracking: tasks per mold, hours per operation, outsourced heat treat, and design revisions.
A frequent gap is the link between mold project data and production ERP, so that tool status, mold shot counts and maintenance history are visible when planning molding jobs.
Compliance and data handling
Overseas brand owners ask for supplier audits covering labor practices, environmental compliance and material declarations. 3D CAD files, mold designs and customer drawings are valuable IP, and contracts often limit who can see them and where they can be stored.
Chinese data rules also apply to personal and certain business data. Manufacturers handling customer designs commonly want document search and analysis to stay inside their own network.
Where private AI helps, and where it does not
Practical uses include natural-language search across past mold projects, quotes and trial reports, summarising ECN histories, and answering planning questions from ERP and MES data such as late jobs or machine loading. Models running on the shop's own servers keep CAD-adjacent documents on site, with human review before any record is changed.
AI will not fix missing data. If hours and scrap are not recorded at the job level, there is nothing reliable to learn from. Start with consistent capture, then add search and analysis.
Frequently asked questions
What is Dongguan known for in manufacturing?
Dongguan is known for contract manufacturing, injection molds, plastics, metal hardware and electronics assembly, and it hosts headquarters or campuses of major phone and technology companies. It sits between Shenzhen and Guangzhou in the Pearl River Delta supply chain.
How are injection mold quotes built?
Mold quotes are based on part geometry, steel grade, cavities, runner system, surface finish, expected tool life and machining and trial hours. The production piece price is quoted separately using resin cost, cycle time, machine rate and scrap. Tooling ownership terms should be agreed in writing.
What ERP do Dongguan factories use?
Smaller factories often use Kingdee or Yonyou with spreadsheets. Larger or foreign-invested firms use SAP, Oracle or specialised mold and MES software. The right choice depends on whether the business is project-based tooling, repetitive production or both.
Is it safe to use AI on customer mold designs?
Only if contracts and technical controls allow it. Running models on-premises avoids sending files to a public service, but access rights, logging and the customer's IP terms still need to be reviewed by the manufacturer.